CN100493932C - Low noise pneumatic tire - Google Patents
Low noise pneumatic tire Download PDFInfo
- Publication number
- CN100493932C CN100493932C CNB2004800216814A CN200480021681A CN100493932C CN 100493932 C CN100493932 C CN 100493932C CN B2004800216814 A CNB2004800216814 A CN B2004800216814A CN 200480021681 A CN200480021681 A CN 200480021681A CN 100493932 C CN100493932 C CN 100493932C
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- China
- Prior art keywords
- absorbing material
- peripheral surface
- inner peripheral
- banded sound
- tire
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- 239000011358 absorbing material Substances 0.000 claims abstract description 160
- 230000002093 peripheral effect Effects 0.000 claims abstract description 114
- 239000011148 porous material Substances 0.000 claims abstract description 8
- 210000003754 fetus Anatomy 0.000 claims description 57
- 239000004925 Acrylic resin Substances 0.000 claims description 6
- 229920000178 Acrylic resin Polymers 0.000 claims description 6
- 229920003002 synthetic resin Polymers 0.000 claims description 3
- 239000000057 synthetic resin Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 description 12
- 230000008859 change Effects 0.000 description 11
- 238000009434 installation Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 238000005452 bending Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000011324 bead Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001603 reducing effect Effects 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000002889 sympathetic effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C5/00—Inflatable pneumatic tyres or inner tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C19/00—Tyre parts or constructions not otherwise provided for
- B60C19/002—Noise damping elements provided in the tyre structure or attached thereto, e.g. in the tyre interior
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C19/00—Tyre parts or constructions not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C5/00—Inflatable pneumatic tyres or inner tubes
- B60C5/12—Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T152/00—Resilient tires and wheels
- Y10T152/10—Tires, resilient
- Y10T152/10036—Cushion and pneumatic combined
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T152/00—Resilient tires and wheels
- Y10T152/10—Tires, resilient
- Y10T152/10036—Cushion and pneumatic combined
- Y10T152/10054—Enclosed cushion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T152/00—Resilient tires and wheels
- Y10T152/10—Tires, resilient
- Y10T152/10495—Pneumatic tire or inner tube
Abstract
A low noise pneumatic tire, comprising band-shaped sound absorbing materials of a porous material installed on the inner peripheral surface of a tread part with an elastic fixing band. The band-shaped sound absorbing material is formed such that its width is 40 to 90% of a tire maximum width (W) and its thickness is 5 to 50 mm. Other band-shaped sound absorbing material is formed in a curved shape along the inner peripheral surface of the tread part in the lateral and/or longitudinal direction. Further, in other the band-shaped sound absorbing material, laterally extending slits are formed in at least one of the inner and outer peripheral surfaces thereof at specified intervals in the longitudinal direction.
Description
Technical field
The present invention relates to low noise pneumatic tire, in more detail, relate to the low noise pneumatic tire that has reduced the noise that causes by empty resonance phenomenon effectively.
Background technology
Produce one of reason of tire noise, be the empty sonorant that causes by the vibration that is filled in the air in the blank part.This cavity sonorant is when vehicle ', and connected to chassis tread of tyre portion is vibrated owing to ground-surface is concavo-convex with the road surface, and this vibration makes the air vibration in the tire blank part and produces.Known in this cavity sonorant, though the frequency of the sound that can hear as noise is because of tire size is different, generally about 200～300Hz.Thereby in order to reduce tire noise, the sound level that reduces this frequency band is important.
As the method that reduces the noise that causes by so empty resonance phenomenon, proposed in the tire blank part, to add the scheme (for example, with reference to patent documentation 1) that sound-absorbing material absorbs sonorant.But, when sound-absorbing material being installed on the tire inner face by bonding grade, because the parts different with tire are attached to inside tires, the squeegee action during therefore owing to tyre rotation makes stress concentration on bonding interface and the situation that sound-absorbing material is peeled off has a lot.Thereby, also remaining a lot of problems on its installation method.
In addition, also attempt changing along tire Zhou Fangxiang, the rotation of resonance frequency and vehicle is ceaselessly changed simultaneously, reduce the method for empty sonorant thus by the section shape that makes the tire blank part.But these methods all make the wheel rim assembleability of tire worsen, and perhaps need to follow significantly change structure, production facilities etc. of change tire, wheel rim.
Patent documentation 1: Japanese kokai publication sho 62-216803 communique
Summary of the invention
The object of the present invention is to provide the low noise pneumatic tire of the undesirable condition in the time of can improving sound-absorbing material without the change ground of the production facilities of tire, wheel rim etc. and install.
Reach the low noise pneumatic tire of the present invention of above-mentioned purpose, it is characterized in that 40～90% width, the thickness that will have a tire maximum width with the flexible fastening band is that the banded sound-absorbing material that is made of porous material of 5～50mm is installed on the inner peripheral surface of fetus face.
Owing to suitably set the size and the thickness of the tire width direction of banded sound-absorbing material like this, and utilize its elastic force this sound-absorbing material to be installed on the inner peripheral surface of fetus face by the flexible fastening band, therefore can break away from easily not cause banded sound-absorbing material, or the mode of undesirable condition such as breakage is installed.
In addition, because banded sound-absorbing material and flexible fastening band, can be with respect to installing behind the tire that has passed through vulcanization process, therefore can be with the change of the production facilities of tire, wheel rim etc.
And, because banded sound-absorbing material and flexible fastening band are installed on the inner peripheral surface of fetus face the obstacle of the operation in the time of therefore can not becoming the wheel rim assembling.
Other low noise pneumatic tire of the present invention, it is characterized in that, with the flexible fastening band be bent to form with will spreading all over Width and/or longitudinally for along the shape of the inner peripheral surface of fetus face, by the banded sound-absorbing material that porous material constitutes, be installed on the inner peripheral surface of fetus face.
Owing to banded sound-absorbing material self is bent to form in the corresponding mode of inner peripheral surface with the fetus face of installing,, banded sound-absorbing material is cooperated therefore with respect to the inner peripheral surface of fetus face.Therefore, can utilize its elastic force, can not cause breaking away from easily and the mode of undesirable condition such as breakage is installed in banded sound-absorbing material on the inner peripheral surface of fetus face by the flexible fastening band.And, can be with the change of the production facilities of tire, wheel rim etc., the obstacle of the operation in the time of yet can not becoming the wheel rim assembling in addition.
Other low noise pneumatic tire more of the present invention, it is characterized in that, with the flexible fastening band will at least one side in inner peripheral surface and outer peripheral face on, form banded sound-absorbing material otch, that constitute by porous material that extends along Width with the interval of regulation along the longitudinal and be installed on the inner peripheral surface of fetus face.
Make it crooked easily owing to add otch like this on the inner peripheral surface of banded sound-absorbing material and at least one side in the outer peripheral face, therefore the inner peripheral surface with respect to fetus face can make banded sound-absorbing material follow at an easy rate.Therefore, can utilize its elastic force, can not cause breaking away from easily and the mode of undesirable condition such as breakage is installed in banded sound-absorbing material on the inner peripheral surface of fetus face by the flexible fastening band.In addition, can be with the change of the production facilities of tire, wheel rim etc., and then the obstacle of the operation also can not become the wheel rim assembling time.
Description of drawings
Fig. 1 is assembled on the wheel rim at an example with low noise pneumatic tire of the present invention, and has filled the radial section-drawing of showing under the state of air pressure.
Fig. 2 is other the block diagram of example of showing the employed banded sound-absorbing material of low noise pneumatic tire of the present invention.
Fig. 3 is the lateral plan of showing under the state on the inner peripheral surface that another other the example of the employed banded sound-absorbing material of low noise pneumatic tire of the present invention is installed to the fetus face that figure do not show with the flexible fastening band.
The part lateral plan of Fig. 4 example that to be explanation banded sound-absorbing material and flexible fastening band heave from the inner peripheral surface of fetus face.
Fig. 5 is the lateral plan of showing under the state on the inner peripheral surface that other the example again of the employed banded sound-absorbing material of low noise pneumatic tire of the present invention is installed to the fetus face that figure do not show with the flexible fastening band.
Fig. 6 is the section-drawing of showing under the state on the inner peripheral surface that other the example again of the employed banded sound-absorbing material of low noise pneumatic tire of the present invention is installed to the fetus face that figure do not show with the flexible fastening band.
Fig. 7 is the part block diagram of showing under the state on the inner peripheral surface that other the example again of the employed banded sound-absorbing material of low noise pneumatic tire of the present invention is installed to the fetus face that figure do not show with the flexible fastening band.
Fig. 8 is other the part block diagram of example of showing the installation side of flexible fastening band.
Fig. 9 is the part block diagram of other example again of showing the installation side of flexible fastening band.
Figure 10 is the part block diagram of the binding of explanation flexible fastening band.
Figure 11 is the lateral plan of the warpage of explanation flexible fastening band.
Figure 12 is the block diagram of other example again of showing the employed banded sound-absorbing material of low noise pneumatic tire of the present invention.
Figure 13 is the block diagram of other example again of showing the employed banded sound-absorbing material of low noise pneumatic tire of the present invention.
Figure 14 is the block diagram of other example again of showing the employed banded sound-absorbing material of low noise pneumatic tire of the present invention.
Figure 15 is the block diagram of other example again of showing the employed banded sound-absorbing material of low noise pneumatic tire of the present invention.
Figure 16 is the block diagram of other example again of showing the employed banded sound-absorbing material of low noise pneumatic tire of the present invention.
The specific embodiment
Below, explain example of the present invention with reference to accompanying drawing.In each figure, common composed component is marked with same label, and the repetitive description thereof will be omitted.
In Fig. 1, air-inflation tyre T, possess fetus face 1, about bead part 2 and with these fetus faces 1 and bead part 2 the sidewall portion 3 about connected to one another.Has the blank part 4 that is used to fill air in the tire inboard.R is the wheel rim that is installed on the air-inflation tyre T.Moreover, though figure do not show, inside tires be provided with about bead part 2 between the carcass plies that extends.Carcass plies outer circumferential side at fetus face 1 is provided with a plurality of bracing plys.About bead part 2 in be embedded with bead core respectively, the both ends of carcass plies bead core around turn down laterally from the tire inboard.
On the inner peripheral surface 1a of the curved fetus face 1 that forms radius of curvature with regulation, by flexible fastening band 6, utilize its elastic force on full week, banded sound-absorbing material 5A being installed, make banded sound-absorbing material 5A can be not easily not break away from thus from the inner peripheral surface 1a of fetus face 1 in the mode that is pressed on the inner peripheral surface 1a.Banded sound-absorbing material 5A is made of low-density porous material, and flexible fastening band 6 is made of the synthetic resin with high tensile elasticity rate.
Banded sound-absorbing material 5A along the width Ws that inner peripheral surface 1a measures, is 40～90% of tire maximum width W, and the scope of thickness t is 5～50mm.Moreover, here said tire maximum width W, be that mounting of tyre is arrived on the standard rim of JATMA (2003) defined, under the automobile-used airtyred situation of family expenses, it is the maximum width of having filled the tire under the state of air pressure of 180kPa, under the airtyred situation beyond the households and automobiles air-inflation tyres such as heavy duty pneumatic vehicle tire, be the maximum width of having filled the tire under the state of the corresponding air pressure of being put down in writing with JATMA (2003) of maximum load capability.
If the width Ws of banded sound-absorbing material 5A surpasses 90% of tire maximum width W,, therefore be easy to generate breakage at its both ends because the distortion at Width both ends is excessive on the inner peripheral surface 1a that banded sound-absorbing material 5A is installed to fetus face 1 time.If the width Ws of banded sound-absorbing material 5A is less than 40% of tire maximum width W, because in the time of on the inner peripheral surface 1a that banded sound-absorbing material 5A is pressed on fetus face 1 with flexible fastening band 6, the width of the banded sound-absorbing material 5A that contacts with inner peripheral surface 1a is narrow, therefore installation site skew under steam just is difficult to stably install.In addition, noise reduces the effect minimizing.
If the thickness t of banded sound-absorbing material 5A is greater than 50mm, because banded sound-absorbing material 5A is blocked up, therefore easily because the repeated deformation that acts on during tire ground connection and breakage.If the thickness t of banded sound-absorbing material 5A is less than 5mm, because thin excessively, reduce effect, and then the repeated deformation that works during easily owing to tire ground connection produces breakage just therefore can not bring into play noise fully.It is desirable to, preferably the thickness t with banded sound-absorbing material 5A is made as 10～30mm.
Owing to suitably set width Ws and the thickness t of banded sound-absorbing material 5A like this, and utilize its elastic force banded sound-absorbing material 5A to be installed on the inner peripheral surface 1a of fetus face 1 by flexible fastening band 6, therefore can be not cause the mode of undesirable conditions such as banded sound-absorbing material 5A breaks away from easily, breakage install.
In addition, because banded sound-absorbing material 5A and flexible fastening band 6, be with respect to mounted component behind the tire T that has passed through vulcanization process, therefore do not need to change the production facilities of tire, wheel rim etc.
And, because banded sound-absorbing material 5A and flexible fastening band 6 are installed on the inner peripheral surface 1a of fetus face 1 obstacle of the operation in the time of therefore can not becoming the wheel rim assembling.
In the example of Fig. 1, banded sound-absorbing material 5A is installed on full week of inner peripheral surface 1a of fetus face 1, but also can is the banded sound-absorbing material 5A that has than the length of the regulation of complete all length of inner peripheral surface 1a.At this moment, reduce effect in order to obtain favorable noise, under 1 of configuration has situation than the banded sound-absorbing material 5A of the length of the regulation of complete all length of inner peripheral surface 1a, preferably its longitudinal length (along the length of tire Zhou Fangxiang) is made as fetus face 1 inner peripheral surface 1a full girth 30% or more than it, be more preferably and be made as 40% or more than it.Under a plurality of situations about having of the arranged spaced that separates regulation than the banded sound-absorbing material 5A of the length of the regulation of complete all length of inner peripheral surface 1a, preferably with the value of the total of the longitudinal length of a plurality of banded sound-absorbing material 5A, be made as fetus face 1 inner peripheral surface 1a full girth 30% or more than it, be more preferably and be made as 40% or more than it.Below Shuo Ming banded sound-absorbing material too.
In addition, flexible fastening band 6 is configured in interior all sides of banded sound-absorbing material 5A, but also can be fixed on the outer peripheral face of banded sound-absorbing material 5A in Fig. 1, and is configured in the outer peripheral face side.
Fig. 2 has showed other example of the employed banded sound-absorbing material of low noise pneumatic tire of the present invention.This band shape sound-absorbing material 5B at cross direction X and vertically on the Y, being bent the shape that is shaped for along the inner peripheral surface 1a of the curved fetus face 1 that forms the radius of curvature with regulation.The banded sound-absorbing material 5B of bending forming similarly is installed on the inner peripheral surface 1a of fetus face 1 by flexible fastening band 6 with Fig. 1 like this.Banded sound-absorbing material 5B shown in Figure 2 has showed the example that has than the banded sound-absorbing material 5B of the length of the regulation of complete all length of inner peripheral surface 1a, but also can with the banded sound-absorbing material 5A of Fig. 1 similarly, be that the full girth along inner peripheral surface 1a extends.
This band shape sound-absorbing material 5B owing to can cooperate with respect to inner peripheral surface 1a substantially very close to each otherly, therefore can utilize its elastic force by flexible fastening band 6, is installed on the inner peripheral surface 1a in the mode that can not cause breaking away from easily with undesirable condition such as breakage.
In addition, do not follow the change of the production facilities etc. of tire, wheel rim, and then the obstacle of the operation can not become the wheel rim assembling time.
Banded sound-absorbing material 5B as shown in Figure 2, is preferably in upward bending forming of Width X and vertical Y, but also can be with respect to any one party bending forming of Width X or vertical Y.
As described above with banded sound-absorbing material 5B bending forming the time, preferably will become the radius of curvature S1 of Width X of outer peripheral face 5B1 of the banded sound-absorbing material 5B of plane of bending, be made as 0.7～1.3 times with respect to the radius of curvature of the Width of the inner peripheral surface 1a of fetus face 1.In addition, the radius of curvature S2 of vertical Y of outer peripheral face 5B1, the radius of curvature with respect to the Zhou Fangxiang of the inner peripheral surface 1a of fetus face 1 preferably also is 0.7～1.3 times.
If radius of curvature S1, the S2 of the outer peripheral face 5B1 of banded sound-absorbing material 5B, less than 0.7 times of the radius of curvature of the inner peripheral surface 1a of fetus face 1, can not be close to last the heaving of inner peripheral surface 1a of fetus face 1 owing to the both ends of banded sound-absorbing material 5B, therefore when tire ground connection be out of shape will its with the inner peripheral surface 1a of fetus face 1 between generation rub, both ends just are easy to breakage.If radius of curvature S1, the S2 of the outer peripheral face 5B1 of banded sound-absorbing material 5B are greater than 1.3 times of the radius of curvature of the inner peripheral surface 1a of fetus face 1, because bending effect is less, just therefore cause undesirable condition when mounted easily.
Fig. 3 has showed other the example again of the employed banded sound-absorbing material of low noise pneumatic tire of the present invention.This band shape sound-absorbing material 5C is the banded sound-absorbing material that has than the length of the regulation of complete all length of the inner peripheral surface 1a of fetus face 1, and flexible fastening band 6 is configured on the outer peripheral face 5C1 of banded sound-absorbing material 5C.On the inner peripheral surface 5C2 of banded sound-absorbing material 5C, be formed with a plurality of otch 9 that extend along the Width of banded sound-absorbing material 5C along the interval n that vertically separates regulation of banded sound-absorbing material 5C.
By a plurality of otch 9 that extend along Width are set on the inner peripheral surface 5C2 of banded sound-absorbing material 5C like this, can make banded sound-absorbing material 5C follow curved inner peripheral surface 1a when mounted at an easy rate.Therefore, can utilize its elastic force, banded sound-absorbing material 5C is installed on the inner peripheral surface 1a of fetus face 1 in the mode that can not cause breaking away from easily with undesirable conditions such as breakages by flexible fastening band 6.
In addition, do not follow the change of the production facilities etc. of tire, wheel rim, and then the obstacle of the operation can not become the wheel rim assembling time.
And,, therefore can improve acoustically effective owing to make the face area that is exposed to the banded sound-absorbing material 5C in the blank part 4 increase by otch 9.
In addition, as shown in Figure 4, when the banded sound-absorbing material 5X that will not have otch 9 is installed on the inner peripheral surface 1a of fetus face 1 with flexible fastening band 6, if the bending stiffness of banded sound-absorbing material 5X is greater than the bending stiffness of flexible fastening band 6, sometimes in the process of moving, banded sound-absorbing material 5X and flexible fastening band 6 are heaved from the inner peripheral surface 1a of fetus face 1 together.But, in the banded sound-absorbing material 5C of Fig. 3, because therefore otch 9 easy deformation of banded sound-absorbing material 5C because of extending along Width can suppress to heave.
In Fig. 3, otch 9 is formed on the inner peripheral surface 5C2 of banded sound-absorbing material 5C, but as shown in Figure 5, also can be formed on the outer peripheral face 5C1 of banded sound-absorbing material 5C.At this moment, flexible fastening band 6 is configured on the inner peripheral surface 5C2 of banded sound-absorbing material 5C.
In addition, as shown in Figure 6, can also on the outer peripheral face 5C1 of banded sound-absorbing material 5C and this two side of inner peripheral surface 5C2, form otch 9.At this moment, flexible fastening band 6 is to dispose by the mode in the banded sound-absorbing material 5C.
In addition, as shown in Figure 7, can also be on the outer peripheral face 5C1 of the banded sound-absorbing material 5C that has otch 9 on the inner peripheral surface 5C2, and then the otch 10 that extends along the longitudinal is set.Thus, can make installation tire width direction, banded sound-absorbing material 5C also become good with respect to the inner peripheral surface 1a of fetus face 1.In the time of on the outer peripheral face 5C1 that otch 9 is formed on banded sound-absorbing material 5C, the otch 10 that extends along the longitudinal can be formed on the inner peripheral surface 5C2 of banded sound-absorbing material 5C.
As the depth d of otch 9, preferably be made as banded sound-absorbing material 5 thickness t 20～90%.If the depth d of otch 9 is 20% more shallow than the thickness t of banded sound-absorbing material 5, the effect that then adds otch 9 is lower, on the contrary, if 90% dark than the thickness t of banded sound-absorbing material 5, then when be full of cracks took place for the front end of otch 9, this be full of cracks was preceding and then might cut off banded sound-absorbing material 5.
The n of interval longitudinally as otch 9 preferably is made as 10～80mm.The n of interval longitudinally of this otch 9, and then preferably be made as than the long also short interval of the ground connection of tire, with evenly making a very bad impression of exempt from customs examination tire.
If the n of interval longitudinally of otch 9 is less than 10mm, then the interval of otch 9 is too narrow, thereby processing becomes miscellaneous.If the n of interval longitudinally of otch 9 surpasses 80mm, just be difficult to make banded sound-absorbing material 5C to follow the inner peripheral surface 1a of fetus face 1, because it is existence becomes the situation at the interval longer than the ground connection of tire, therefore undesirable in addition.The n of interval longitudinally of otch 9 both can be uniformly-spaced, also can be uneven.
In the present invention, as the porous material that constitutes banded sound-absorbing material 5A, 5B, 5C, foamed resin preferably, particularly preferably low-density polyurethane foam.Make the form of bubble of the foams of foamed resin foaming, the continuous air bubbles that preferably adjacent bubble communicates with each other.In addition, banded sound-absorbing material 5A, 5B, 5C replace foamed resin, can also be made of nonwoven fabrics, woven etc.
Banded sound-absorbing material 5A, 5B, 5C, width forms constantly in above-mentioned example, but also can change.
Material as constituting flexible fastening band 6 can use synthetic resin such as acrylic resin.When using acrylic resin, can use the material of crooked elastic rate in the scope of 1100～1800MPa.If the crooked elastic rate of acrylic resin is less than 1100MPa, then elasticity becomes too small, thereby just flexible fastening band 6 is difficult to bring into play fully the function as elastic straps.If the crooked elastic rate of acrylic resin surpasses 1800MPa, then rigidity becomes too high, thus the distortion when flexible fastening band 6 can not be followed tire ground connection, just therefore damaged easily, and durability reduces.Be more preferably, crooked elastic rate is made as 1300～1700MPa.Moreover said here crooked elastic rate is that the test method of the crooked elastic rate by ASTM (AMERICAN SOCIETY FOR TESTING AND MATERIAL) D790 defined is obtained.
As the width W g of flexible fastening band 6, preferably be made as the scope of 10～30mm, in this scope, the rigidity that banded sound-absorbing material 5A, 5B, 5C preferably are installed suitably determines.If the width W g of flexible fastening band 6 is less than 10mm, the undercapacity of flexible fastening band 6 then.If the width W g of flexible fastening band 6 is greater than 30mm, then weight increases, so undesirable.
Thickness u as flexible fastening band 6 preferably is made as 0.5～2.0mm.If the thickness u of flexible fastening band 6 is less than 0.5mm, the undercapacity of flexible fastening band 6 then.If the thickness u of flexible fastening band 6 surpasses 2.0mm, then bending stiffness becomes too high, thereby damaged easily.Be more preferably, the thickness u of flexible fastening band 6 is made as 0.75～1.5mm.
In the time of on the outer peripheral face that flexible fastening band 6 is configured in banded sound-absorbing material, preferably link flexible fastening band 6 with linking band 8 in such a way.
As shown in figure 11, banded sound-absorbing material 5Y is installed to flexible fastening band 6 on the tire T, because its girth is fixed, therefore can cause following problem, that is, even if because identical tire size, the interior girth of tire also has delicate difference, perhaps since the variation of the air pressure of tire can to cause that the interior girth of tire has delicate not equal yet, on the band part 6x that is positioned at the grounding parts Q place of road surface G connected to chassis fetus face 1, might produce warpage.Therefore thus, the distortion of banded sound-absorbing material 5Y will become greatly, will shorten the fatigue life of banded sound-absorbing material 5Y, and perhaps the friction because of the inner peripheral surface 1a of flexible fastening band 6 and fetus face 1 produces damage on inner peripheral surface 1a.In order to prevent the generation of such warpage, flexible fastening band 6 preferably connects to ring-type in the mode of its girth about than complete all length 10～50mm of the inner peripheral surface 1a of fetus face 1 with binding band 8.If the girth of flexible fastening band 6 is longer than above-mentioned scope, just be difficult to prevent effectively the generation of warpage.If the girth of flexible fastening band 6 is shorter than above-mentioned scope, just can not banded sound-absorbing material 5Y be engaged on the inner peripheral surface 1a of fetus face 1 with flexible fastening band 6 identically.
For face area is increased, thereby improve acoustically effective, preferably banded sound-absorbing material 5A, inner peripheral surface 5A2, the 5B2 of 5B, 5C, 5C2 are formed male and fomale(M﹠F).The shape of this male and fomale(M﹠F) does not limit especially, for example, can make the male and fomale(M﹠F) shown in Figure 12～16.Moreover, in Figure 12～16, showed the banded sound-absorbing material 5A that has than the length of the regulation of complete all length of inner peripheral surface 1a.
Figure 12 is on the inner peripheral surface 5A2 of flat condition, along the longitudinal and Width form recess 10 with the interval of regulation and formed the figure of male and fomale(M﹠F).Figure 13 is on the inner peripheral surface 5A2 of flat condition, along the longitudinal and Width form protuberance 11 with the interval of regulation and formed the figure of male and fomale(M﹠F).When having formed protuberance 11 like this, the thickness t of banded sound-absorbing material 5A is the thickness that comprises protuberance 11.Below the situation of Shuo Ming banded sound-absorbing material 5A also is same.
Figure 14 is on the inner peripheral surface 5A2 of flat condition, forms the protuberance 12 that extends along the longitudinal with the interval of regulation and has formed the figure of male and fomale(M﹠F) along Width.Figure 15 is on the inner peripheral surface 5A2 of flat condition, forms the protuberance 13 that extends along Width and has formed male and fomale(M﹠F) with the interval of regulation along the longitudinal.Figure 16 is on the inner peripheral surface 5A2 of flat condition, along the longitudinal and Width form protuberance 14 with the interval of regulation, the configuration and form male and fomale(M﹠F) of simultaneously protuberance 14 of adjacent column being staggered.
When forming recess or protuberance like this on inner peripheral surface 5A2, preferably with concavo-convex poor, promptly the height of concave depth or protuberance is made as 20mm respectively or below it.If the height of concave depth or protuberance surpasses 20mm, because processing becomes miscellaneous and undesirable.
In Figure 12～16, on the inner peripheral surface 5A2 of banded sound-absorbing material, recess or protuberance are set, but also can on the inner peripheral surface 5A2 of flat condition, mix recess and protuberance.
As above-mentioned, low noise pneumatic tire of the present invention, be to go up the noise reduce the empty sympathetic response of following tire by the inner peripheral surface 1a that banded sound-absorbing material 5A, 5B, 5C is installed in fetus face 1 with flexible fastening band 6, because banded sound-absorbing material 5A, 5B, 5C and flexible fastening band 6 is additional, become the increase of generation quality on tire T and the unbalanced reason of quality.Thereby, must limit the weight of banded sound-absorbing material 5A, 5B, 5C and flexible fastening band 6 as much as possible.
But, can the disadvantageous like this one side of flexible utilization, and will be installed in the weight of banded sound-absorbing material 5A, 5B, 5C and flexible fastening band 6 on the inner peripheral surface 1a of fetus face 1, use as the unbalanced adjustment component of quality that is used to adjust the tire individuality.Promptly, though tire T generally has inevitable quality unbalanced, but by being made as following formation, promptly suitably increase banded sound-absorbing material 5A, 5B, 5C with and/or flexible fastening band 6 in the improve quality weight of the part on the position of relative deficiency of the Zhou Fangxiang that is positioned at tire T, can be used as the quality adjustment component and apply flexibly effectively.
Low noise pneumatic tire of the present invention, in above-mentioned example, banded sound-absorbing material 5A, 5B, 5C are respectively installed to tire T to be gone up and constitutes, but also the structure that banded sound-absorbing material 5A, 5B, 5C are had suitably can be made up, formation has the banded sound-absorbing material of the structure of combination, and it is installed in tire on the inner peripheral surface 1a of fetus face 1 with flexible fastening band 6.
Embodiment 1
In the air-inflation tyre of tire size 205/65R15, make respectively according to table 1 set like that the width Ws of banded sound-absorbing material of Fig. 1 and thickness t tire of the present invention 1～5 and comparative tire 1～4, the comparative tire 5 each 4 of banded sound-absorbing material is not installed.
Each banded sound-absorbing material of testing tire uses isocyanurate foam.Each flexible fastening band uses acrylic resin, and its width is 20mm, and thickness is 1.0mm.
When the ranking test of the installation of this each 4 test tires being carried out noise performance and banded sound-absorbing material by test method shown below, obtained result as shown in table 1.
Noise performance
Each 4 test tires are assembled into respectively on the wheel of rim size 15 * 61/2JJ, and after air pressure is made as 220kPa, are installed on the home vehicle of free air capacity 2500cc, on the position of the indoor operator's saddle reveal ear of car, microphone is set.Measure noise in the car of frequency band of the frequency 200～300Hz when making home vehicle travel on rough riding surface with microphone, and be that 100 exponential quantity is represented in order to comparative tire 5 its result with speed 50km/h.This value is more little, and noise performance is good more.Moreover exponential quantity is the grade of having improved noise significantly in sensory evaluation in the scope below 85.
The installation of banded sound-absorbing material
After each test vehicle that makes the noise performance test of being through with travels 6000km, take off from test vehicle and respectively to test tire, respectively test the installing condition of the banded sound-absorbing material in the tire by visual observations, and with zero, * these 2 its results of grade evaluation.The banded sound-absorbing material of zero expression does not break away from or offset, and installing condition is good, and the situation of the breakage of banded sound-absorbing material does not take place, * represent banded sound-absorbing material offset, the situation of damaged generation is perhaps arranged on banded sound-absorbing material.
(table 1)
| Width Ws | Thickness (mm) | Noise performance | Installation property | |
| Comparative tire 1 | 0.3W | 5 | 82 | × |
| Tire 1 of the present invention | 0.4W | 5 | 77 | ○ |
| Tire 2 of the present invention | 0.7W | 5 | 75 | ○ |
| Tire 3 of the present invention | 0.9W | 5 | 73 | ○ |
| Comparative tire 2 | 0.95W | 5 | 73 | × |
| Comparative tire 3 | 0.4W | 3 | 89 | × |
| Tire 4 of the present invention | 0.4W | 20 | 70 | ○ |
| Tire 5 of the present invention | 0.4W | 50 | 65 | ○ |
| Comparative tire 4 | 0.4W | 60 | 62 | × |
| Comparative tire 5 | —— | —— | 100 | —— |
As known from Table 1, tire of the present invention can be when bringing into play noise and reducing effect fully, the undesirable condition when improving banded sound-absorbing material and installing.
Embodiment 2
In tire size 205/65R15 air-inflation tyre, make the tire of the present invention 6 of banded sound-absorbing material and have the tire of the present invention 7 each 4 of the banded sound-absorbing material of Fig. 3 with Fig. 2.
Each tests the banded sound-absorbing material and the flexible fastening band of tire, uses material similarly to Example 1.Radius of curvature S1, the S2 of the outer peripheral face of the banded sound-absorbing material of tire 6 of the present invention are identical with the radius of curvature of the inner peripheral surface of fetus face.The depth d of the otch of the banded sound-absorbing material of tire 7 of the present invention is 30% of a thickness, and n is 50mm at interval.
When the ranking test of the installation of this each 4 test tires being carried out similarly to Example 1 noise performance and banded sound-absorbing material, obtained the result shown in the table 2.
(table 2)
| Noise performance | | |
| Tire | ||
| 6 of the present invention | 76 | ○ |
| Tire 7 of the present invention | 73 | ○ |
Understand from table 2, tire of the present invention can be when the performance noise reduces effect, the undesirable condition when improving banded sound-absorbing material and installing.
Industrial utilizability
Have the present invention of above-mentioned good effect, as the low noise pneumatic tire that is installed on the vehicle, can very effectively utilize.
Claims (9)
1. low noise pneumatic tire, wherein, on the inner peripheral surface of fetus face, utilize the flexural resilience power to fetus face inner peripheral surface direction of flexible fastening band that the compartment of terrain that separates regulation on inner peripheral surface and outer peripheral face both sides along the longitudinal is installed and be formed with the banded sound-absorbing material otch that extends along Width, that constitute by porous material.
2. low noise pneumatic tire, wherein, on the inner peripheral surface of fetus face, utilize the flexural resilience power to fetus face inner peripheral surface direction of flexible fastening band, the compartment of terrain that separates regulation on any one party in inner peripheral surface and outer peripheral face along the longitudinal is installed is formed with the otch that extends along Width and on the opposing party, is formed with the banded sound-absorbing material otch that extends along the longitudinal, that constitute by porous material.
3. low noise pneumatic tire as claimed in claim 1 or 2, wherein, the degree of depth of the otch that extends along Width be banded sound-absorbing material thickness 20～90%, and be 10～80mm at interval.
4. low noise pneumatic tire as claimed in claim 1 or 2, wherein, the width of banded sound-absorbing material is 40～90% of a tire maximum width, thickness is 5～50mm.
5. low noise pneumatic tire as claimed in claim 1 or 2 wherein, is bent to form banded sound-absorbing material and is the shape along the inner peripheral surface of fetus face at its Width and/or vertically.
6. low noise pneumatic tire as claimed in claim 5, wherein, the radius of curvature of the outer peripheral face that is bent to form of banded sound-absorbing material is 0.7～1.3 times with respect to the radius of curvature of the inner peripheral surface of fetus face.
7. low noise pneumatic tire as claimed in claim 1 or 2 wherein, forms male and fomale(M﹠F) with the inner peripheral surface of banded sound-absorbing material, and the concavo-convex difference of this male and fomale(M﹠F) is made as 20mm or below it.
8. low noise pneumatic tire as claimed in claim 1 or 2 wherein, constitutes the flexible fastening band by synthetic resin, and the width of this flexible fastening band is made as 10～30mm, and thickness is made as 0.5～2.0mm.
9. low noise pneumatic tire as claimed in claim 8, wherein, the flexible fastening band is that the acrylic resin of 1100～1800MPa constitutes by crooked elastic rate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003285808 | 2003-08-04 | ||
| JP285808/2003 | 2003-08-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1829612A CN1829612A (en) | 2006-09-06 |
| CN100493932C true CN100493932C (en) | 2009-06-03 |
Family
ID=34113903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800216814A Active CN100493932C (en) | 2003-08-04 | 2004-08-04 | Low noise pneumatic tire |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7581577B2 (en) |
| JP (1) | JP4281874B2 (en) |
| KR (1) | KR101148012B1 (en) |
| CN (1) | CN100493932C (en) |
| DE (1) | DE112004001427B4 (en) |
| WO (1) | WO2005012007A1 (en) |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108136830A (en) * | 2015-10-15 | 2018-06-08 | 横滨橡胶株式会社 | Pneumatic tire |
| CN108136830B (en) * | 2015-10-15 | 2020-06-09 | 横滨橡胶株式会社 | Pneumatic tire |
| CN108349305A (en) * | 2015-10-28 | 2018-07-31 | 横滨橡胶株式会社 | Pneumatic tire |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN1829612A (en) | 2006-09-06 |
| KR20060069826A (en) | 2006-06-22 |
| US7581577B2 (en) | 2009-09-01 |
| KR101148012B1 (en) | 2012-05-25 |
| DE112004001427B4 (en) | 2016-04-28 |
| JPWO2005012007A1 (en) | 2006-09-14 |
| US20060231185A1 (en) | 2006-10-19 |
| JP4281874B2 (en) | 2009-06-17 |
| DE112004001427T5 (en) | 2006-10-26 |
| WO2005012007A1 (en) | 2005-02-10 |
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